﻿/*
 * Copyright (c) 2010 Stephen A. Pratt
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

namespace org.critterai.geom
{
    /// <summary>
    /// Specifies the relationship between two lines.
    /// </summary>
    public enum LineRelType : byte
    {
        /// <summary>
        /// Lines are parallel and overlap each other.  (Share all points.)
        /// </summary>
        Collinear,

        /// <summary>
        /// Lines intersect, but their segments do not.
        /// </summary>
        LinesIntersect,

        /// <summary>
        /// Line segments intersect each other.
        /// </summary>
        SegmentsIntersect,

        /// <summary>
        /// Line segment B is crossed by line A.
        /// </summary>
        ALineCrossesBSeg,

        /// <summary>
        /// Line segment A is crossed by line B.
        /// </summary>
        BLineCrossesASeg,

        /// <summary>
        /// Lines are parallel and do not overlap each other.  (Share no points.)
        /// </summary>
        Parallel,

        /// <summary>
        /// Lines do not intersect, but are not parallel.
        /// (Share no points. Only applicable to 3-dimensional lines.)
        /// </summary>
        Skew
    }
}
